The American Heritage® Dictionary of the English Language, 4th Edition
n. A sensory system in certain animals, such as bats and dolphins, in which usually high-pitched sounds are emitted and their echoes interpreted to determine the direction and distance of objects.
n. Electronics A process for determining the location of objects by emitting sound waves and analyzing the waves reflected back to the sender by the object.
n. The use of echoes to detect objects as observed in bats and other natural creatures. Also known as biosonar.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. determining the location of something by measuring the time it takes for an echo to return from it
Word Usage
"The incredible change, his mother said, is owed to a technique called echolocation, similar to the method used by dolphins and bats, that allows Lucas to paint a picture of his surroundings using sound he creates himself."